To the Editor.—Neisseria sp, other than N gonorrhoeae and N meningitidis, are reported with increased frequency as causes of human disease. However, infective endocarditis caused by any Neisseria sp remains a rare event, not having been mentioned as the causal agent of any case among 1,328 episodes reported in a recent subject review.1 We report a case of N subflava endocarditis that, to our knowledge, is the first published case caused by this organism.

Report of a Case.—A 35-year-old man was hospitalized with a two-week history of headaches, fever, and chills. The patient had a history of recurrent dental abscesses. Four months before admission, he had dental work performed without antibiotic prophylaxis. There was no history of rheumatic fever. Physical examination showed a febrile, healthy-appearing man, with poor oral hygiene and a systolic heart murmur. His neck was not stiff, his lungs were clear of